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https://github.com/mpv-player/mpv
synced 2024-12-12 01:46:16 +00:00
896d62f4b9
on the CCC-Camp ICMP2 (www.icmp2.de) this weekend, some friends and I played around with our Blinkenlights replicas and found a little bug in your MPlayer Blinkenlights outpur driver "vo_bl". The Blinkenlights UDP-Protocol contains the maximum grayscale value "maxval" (e.g. 255 for 8 bit) instead of the number of grayscales (e.g. 256 for 8 bit). Because some programs are very strict concerning this value, we had to patch mpalyer to get it to work. Today, I've added an output scheme "hdl" for the Haus des Lehrers in Berlin, on which an installation with grayscales was done last winter. Additionally, I've also added an output scheme named "grayscale" that adapts the size of the UDP packets to the size used with "-vf scale -zoom" that we will need for a project (a room with over 15000 pixels at the walls and floor) next year. git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13001 b3059339-0415-0410-9bf9-f77b7e298cf2
465 lines
12 KiB
C
465 lines
12 KiB
C
/*
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* vo_bl.c - playback using the Blinkenlights UPD protocol (and to files)
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*
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* UDP socket handling copied from bsender.c part of blib-0.6:
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* http://sven.gimp.org/blinkenlights/
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* Copyright (c) 2001-2001 The Blinkenlights Crew:
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* Sven Neumann <sven@gimp.org>
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* Michael Natterer <mitch@gimp.org>
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* Daniel Mack <daniel@yoobay.net>
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* (these portions are licensed under GNU GPL v2 or "(at your option)
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* any later version")
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*
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* Other stuff: Copyright (C) Rik Snel 2002, License GNU GPL v2
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*
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* patch from Stefan Schuermans <1stein@schuermans.info>:
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* - correction of "maxval" in Blinkenlights UDP protcol
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* - new scheme for new HDL
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* - new scheme for grayscale in arbitrary size
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include "config.h"
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#ifndef HAVE_WINSOCK2
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#define closesocket close
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#include <netdb.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#else
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#include <winsock2.h>
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#endif
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#include "video_out.h"
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#include "video_out_internal.h"
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#include "../mp_msg.h"
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#include "../m_option.h"
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#include "fastmemcpy.h"
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static vo_info_t info =
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{
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"Blinkenlights driver: http://www.blinkenlights.de",
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"bl",
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"Rik Snel <snel@phys.uu.nl>",
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""
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};
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LIBVO_EXTERN (bl)
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/* General variables */
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static unsigned char *image = NULL;
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static unsigned char *tmp = NULL;
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static int framenum, yoff, stride;
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static char *bl_subdevice = NULL;
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static int prevpts = -1;
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typedef struct {
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char *name; /* filename */
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FILE *fp;
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} bl_file_t;
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typedef struct {
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char *name; /* hostname */
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int port;
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int fd; /* file descriptor */
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} bl_host_t;
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typedef struct {
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char *name;
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int img_format;
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int channels;
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int width;
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int height;
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int bpc; /* bits per component: bpc = 3, channels = 3 => bpp = 24*/
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/* file output functions */
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int (*init_file)(bl_file_t *file);
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void (*write_frame)(bl_file_t *file, unsigned char *i, int duration);
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void (*close_file)(bl_file_t *file);
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/* network output functions */
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int (*init_connection)(bl_host_t *host);
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void (*send_frame)(bl_host_t *host);
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void (*close_connection)(bl_host_t *host);
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} bl_properties_t;
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static bl_properties_t *bl = NULL;
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/* arbitrary limit because I am too lazy to do proper memory management */
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#define BL_MAX_FILES 16
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#define BL_MAX_HOSTS 16
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static bl_file_t bl_files[BL_MAX_FILES];
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static bl_host_t bl_hosts[BL_MAX_HOSTS];
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static int no_bl_files = 0;
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static int no_bl_hosts = 0;
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typedef struct {
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uint32_t magic;
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uint16_t height;
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uint16_t width;
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uint16_t channels;
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uint16_t maxval;
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unsigned char data[0];
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} bl_packet_t;
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static bl_packet_t *bl_packet = NULL;
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static int bl_size;
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/* bml output functions */
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static int bml_init(bl_file_t *f) {
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f->fp = fopen(f->name, "w");
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if (!f->fp) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: error opening %s\n", f->name);
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return 1;
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}
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fprintf(f->fp,
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"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
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"<blm width=\"%d\" height=\"%d\" bits=\"%d\" channels=\"%d\">\n"
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" <header>\n"
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" <title>Movie autogenerated by MPlayer</title>\n"
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" <url>http://www.mplayerhq.hu</url>\n"
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" </header>\n", bl->width, bl->height, bl->bpc, bl->channels);
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return 0;
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}
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static void bml_write_frame(bl_file_t *f, unsigned char *i, int duration) {
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int j, k;
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fprintf(f->fp, " <frame duration=\"%d\">\n", duration);
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for (j = 0; j < bl->height; j++) {
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fprintf(f->fp, " <row>");
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for (k = 0; k < bl->width; k++)
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fprintf(f->fp, "%02x", *(i + j * bl->width + k));
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fprintf(f->fp, "</row>\n");
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}
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fprintf(f->fp, " </frame>\n");
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}
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static void bml_close(bl_file_t *f) {
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fprintf(f->fp, "</blm>\n");
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fclose(f->fp);
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}
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/* Blinkenlights UDP protocol */
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static int udp_init(bl_host_t *h) {
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struct sockaddr_in addr;
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struct hostent *dest;
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dest = gethostbyname(h->name);
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if (!dest) {
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mp_msg(MSGT_VO, MSGL_ERR,
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"unable to resolve host %s\n", h->name);
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return 1;
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}
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h->fd = -1;
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addr.sin_family = AF_INET;
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addr.sin_port = htons(h->port);
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memcpy(&addr.sin_addr.s_addr, dest->h_addr_list[0], dest->h_length);
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h->fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (h->fd < 0) {
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mp_msg(MSGT_VO, MSGL_ERR,
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"couldn't create socket for %s\n", h->name);
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return 1;
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}
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if (connect(h->fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
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mp_msg(MSGT_VO, MSGL_ERR, "couldn't connect socket for %s\n",
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h->name);
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closesocket(h->fd);
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return 1;
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}
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return 0;
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}
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static void udp_send(bl_host_t *h) {
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if (send(h->fd, bl_packet, bl_size, 0) != bl_size)
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mp_msg(MSGT_VO, MSGL_ERR, "unable to send to %s\n", h->name);
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}
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static void udp_close(bl_host_t *h) {
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closesocket(h->fd);
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}
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#define NO_BLS 3
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static bl_properties_t bls[NO_BLS] = {
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{ "hdl", IMGFMT_YV12, 1, 18, 8, 8,
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&bml_init, &bml_write_frame, &bml_close,
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&udp_init, &udp_send, &udp_close },
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{ "arcade", IMGFMT_YV12, 1, 26, 20, 8,
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&bml_init, &bml_write_frame, &bml_close,
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&udp_init, &udp_send, &udp_close },
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{ "grayscale", IMGFMT_YV12, 1, -1, -1, 8, /* use width and height of movie */
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&bml_init, &bml_write_frame, &bml_close,
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&udp_init, &udp_send, &udp_close } };
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static uint32_t config(uint32_t width, uint32_t height, uint32_t d_width,
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uint32_t d_height, uint32_t fullscreen, char *title, uint32_t format)
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{
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void * ptr;
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/* adapt size of Blinkenlights UDP stream to size of movie */
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if (bl->width < 0 || bl->height < 0) {
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if (bl->width < 0) /* use width of movie */
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bl->width = width;
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if (bl->height < 0) /* use height of movie */
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bl->height = height;
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/* check for maximum size of UDP packet */
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if (12 + bl->width*bl->height*bl->channels > 65507) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: %dx%d-%d does not fit into an UDP packet\n",
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bl->width, bl->height, bl->channels);
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return 1;
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}
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/* resize frame and tmp buffers */
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bl_size = 12 + bl->width*bl->height*bl->channels;
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ptr = realloc(bl_packet, 12 + bl->width*bl->height*3); /* space for header and image data */
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if (ptr)
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bl_packet = (bl_packet_t*)ptr;
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else {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
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return 1;
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}
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image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
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ptr = realloc(tmp, bl->width*bl->height*3); /* space for image data only */
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if (ptr)
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tmp = (unsigned char*)ptr;
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else {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
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return 1;
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}
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}
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framenum = 0;
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if (format != IMGFMT_YV12) {
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mp_msg(MSGT_VO, MSGL_ERR, "vo_bl called with wrong format");
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return 1;
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}
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if (width > bl->width) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: width of movie too large %d > %d\n", width, bl->width);
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return 1;
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}
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if (height > bl->height) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: height of movie too large %d > %d\n", height, bl->height);
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return 1;
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}
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if (!image) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: image should be initialized, internal error\n");
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return 1;
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}
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memset(image, 0, bl->width*bl->height*3); /* blank the image */
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mp_msg(MSGT_VO, MSGL_V, "vo_config bl called\n");
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return 0;
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}
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static void draw_osd(void) {
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}
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static void flip_page (void) {
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int i;
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if (prevpts >= 0) for (i = 0; i < no_bl_files; i++)
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bl->write_frame(&bl_files[i], tmp, (vo_pts - prevpts)/90);
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memcpy(tmp, image, bl->width*bl->height*bl->channels);
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prevpts = vo_pts;
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for (i = 0; i < no_bl_hosts; i++) bl->send_frame(&bl_hosts[i]);
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framenum++;
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return;
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}
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static uint32_t draw_frame(uint8_t * src[]) {
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return 0;
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}
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static uint32_t query_format(uint32_t format) {
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if (format == bl->img_format)
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return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
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return 0;
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}
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static void uninit(void) {
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int i;
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mp_msg(MSGT_VO, MSGL_V, "bl: uninit called\n");
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free(bl_packet);
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bl_packet = NULL;
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free(bl_subdevice);
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bl_subdevice = NULL;
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for (i = 0; i < no_bl_files; i++) bl->close_file(&bl_files[i]);
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for (i = 0; i < no_bl_hosts; i++) bl->close_connection(&bl_hosts[i]);
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no_bl_files = 0;
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no_bl_hosts = 0;
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bl = NULL;
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}
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static void check_events(void) {
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}
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static uint32_t draw_slice(uint8_t *srcimg[], int stride[],
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int wf, int hf, int xf, int yf) {
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int i, j, w, h, x, y;
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uint8_t *dst;
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uint8_t *src=srcimg[0];
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uint8_t *src1=srcimg[1];
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uint8_t *src2=srcimg[2];
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w = wf; h = hf; x = xf; y = yf;
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dst=image; /* + zr->off_y + zr->image_width*(y/zr->vdec)+x;*/
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// copy Y:
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for (i = 0; i < h; i++) {
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memcpy(dst,src,w);
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dst+=bl->width;
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src+=stride[0];
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}
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return 0;
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}
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static uint32_t preinit(const char *arg) {
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char *p, *q;
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int end = 0, i;
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char txt[256];
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if (!arg || strlen(arg) == 0) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must be given, example: -vo bl:arcade:host=localhost:2323\n");
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return 1;
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}
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bl_subdevice = malloc(strlen(arg) + 1);
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if (!bl_subdevice) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
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return 1;
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}
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p = bl_subdevice;
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strcpy(p, arg);
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mp_msg(MSGT_VO, MSGL_V, "bl: preinit called with %s\n", arg);
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for (i = 0; i < NO_BLS; i++) {
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if (!strncmp(p, bls[i].name, strlen(bls[i].name)))
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break;
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}
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if (i >= NO_BLS) {
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txt[0] = 0;
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for (i = 0; i < NO_BLS; i++)
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if (strlen( txt ) + 4 + strlen( bls[i].name ) + 1 < sizeof(txt))
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sprintf( txt + strlen( txt ), "%s%s",
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txt[0] == 0 ? "" : i == NO_BLS - 1 ? " or " : ", ", bls[i].name );
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mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must start with %s\nbl: i.e. -vo bl:arcade:host=localhost:2323\n", txt);
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return 1;
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}
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bl = &bls[i];
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p += strlen(bls[i].name);
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if (*p == '\0') {
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no_bl_hosts = 1;
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bl_hosts[0].name = "localhost";
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bl_hosts[0].port = 2323;
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mp_msg(MSGT_VO, MSGL_V, "bl: no hosts/files specified, using localhost:2323\n");
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end = 1;
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} else if (*p != ':') {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in subdevice\n");
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return 1;
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}
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p++;
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while (!end) {
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q = p + 5;
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if (!strncmp(p, "file=", 5)) {
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if (no_bl_files == BL_MAX_FILES) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of files reached (%d)\n", BL_MAX_FILES);
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return 1;
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}
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p += 5;
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while (*q != ',' && *q != '\0') q++;
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if (*q == '\0') end = 1;
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*q = '\0';
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bl_files[no_bl_files].name = p;
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mp_msg(MSGT_VO, MSGL_V, "blfile[%d]: %s\n",
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no_bl_files, p);
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no_bl_files++;
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} else if (!strncmp(p, "host=", 5)) {
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if (no_bl_hosts == BL_MAX_HOSTS) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of hosts reached (%d)\n", BL_MAX_HOSTS);
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return 1;
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}
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p += 5;
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while (*q != ',' && *q != '\0' && *q != ':') q++;
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if (*q == ':') {
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*q++ = '\0';
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bl_hosts[no_bl_hosts].name = p;
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bl_hosts[no_bl_hosts].port = atoi(q);
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while (*q != ',' && *q != '\0') q++;
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if (*q == '\0') end = 1;
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} else {
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/* use default port */
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if (*q == '\0') end = 1;
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*q = '\0';
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bl_hosts[no_bl_hosts].name = p;
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bl_hosts[no_bl_hosts].port = 2323;
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}
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mp_msg(MSGT_VO, MSGL_V,
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"blhost[%d]: %s:%d\n",
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no_bl_hosts, p,
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bl_hosts[no_bl_hosts].port);
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no_bl_hosts++;
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} else {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in entry %d in subdevice %s, should be a comma seperated\nlist of host=name:port and file=foo.bml\n", no_bl_hosts, no_bl_files, arg);
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return 1;
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}
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p = ++q;
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}
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if (bl->width >= 0 && bl->height >= 0) { /* size already known */
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bl_size = 12 + bl->width*bl->height*bl->channels;
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bl_packet = malloc(12 + bl->width*bl->height*3); /* space for header and image data */
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image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
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tmp = malloc(bl->width*bl->height*3); /* space for image data only */
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}
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else { /* size unknown yet */
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bl_size = 12;
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bl_packet = malloc(12 + 3); /* space for header and a pixel */
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image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
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tmp = malloc(3); /* space for a pixel only */
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}
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if (!bl_packet || !tmp) {
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mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
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return 1;
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}
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bl_packet->magic = htonl(0x23542666);
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bl_packet->width = htons(bl->width);
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bl_packet->height = htons(bl->height);
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bl_packet->channels = htons(bl->channels);
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bl_packet->maxval = htons((1 << bl->bpc) - 1);
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/* open all files */
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for (i = 0; i < no_bl_files; i++)
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if (bl->init_file(&bl_files[i])) return 1;
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|
|
|
/* open all sockets */
|
|
for (i = 0; i < no_bl_hosts; i++)
|
|
if (bl->init_connection(&bl_hosts[i])) return 1;
|
|
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint32_t control(uint32_t request, void *data, ...) {
|
|
switch (request) {
|
|
case VOCTRL_QUERY_FORMAT:
|
|
return query_format(*((uint32_t*)data));
|
|
}
|
|
return VO_NOTIMPL;
|
|
}
|